Question

cameron thought she could use fire to remove the unwanted grasses. dr. cameron marked off six plots within a large area of the prairie. in three of the plots, she set a carefully controlled fire to burn all of the plants once each year for three years. in the remaining three plots, she did not set any fires. a year after the last fire, dr. cameron estimated the percentage of area covered by unwanted grasses in each of the six plots. in this experiment, which were part of an experimental group? the plots with no fires the plots with fires

Explanation:

The experimental group in a study is the group that receives the test treatment (the variable being investigated). Here, the treatment is the controlled annual fires, so the plots exposed to this treatment are the experimental group. The unburned plots serve as the control group for comparison.

Answer:

the plots with fires